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Transactions of the American Mathematical Society
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The information encoded in initial ideals

Author(s): Gunnar Fløystad; Mark L. Green
Journal: Trans. Amer. Math. Soc. 353 (2001), 1427-1453.
MSC (2000): Primary 13P10; Secondary 14H50
Posted: November 29, 2000
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Abstract | References | Similar articles | Additional information

Abstract:

We consider homogeneous ideals $I$ and the initial ideal $\text{in}(I)$ for the revlex order. First we give a sequence of invariants computed from $I$ giving better and better ``approximations" to the initial ideal and ending in an equivalent description.

Then we apply this to different settings in algebraic geometry to understand what information is encoded in the generic initial ideal of the ideal of a projective scheme.

We also consider the higher initial ideals as defined in a paper by Fløystad. In particular, we show that giving the generic higher initial ideal of a space curve is equivalent to giving the generic initial ideal of a linked curve.


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Additional Information:

Gunnar Fløystad
Affiliation: Matematisk Institutt, Johs. Brunsgate 12, 5008 Bergen, Norway
Email: gunnar@mi.uib.no

Mark L. Green
Affiliation: Department of Mathematics, University of California at Los Angeles, Los Angeles, California 90024
Email: mlg@math.ucla.edu

DOI: 10.1090/S0002-9947-00-02737-9
PII: S 0002-9947(00)02737-9
Received by editor(s): June 5, 1999
Posted: November 29, 2000
Copyright of article: Copyright 2000, American Mathematical Society


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